Inexperienced off-road drivers may benefit from the automatic assistance of the Terrain Response system and the driver
information. Experienced off-road drivers can select the specific programs for extreme conditions to access control over the
vehicle systems (for example; accelerator pedal maps, transmission shift maps, traction settings) which are not accessible
on vehicles without Terrain Response.
Stop/Start Vehicles - From 2010 MY
Activation of the Terrain Response special programs will deactivate the Stop/Start system.
However, if Terrain Response is activated when the engine is shutdown in a Stop/Start cycle the engine will automatically
restart. If during this event the Stop/Start system cannot detect the driver's occupancy, for example either the driver’s
safety belt or door is unlatched, the engine will not restart. The Stop/Start system will request the driver to depress the
clutch to restart the engine. The driver will be informed of this by ‘RESTART REQUIRED PRESS CLUTCH’ being displayed in
the message center.
For additional information, refer to:
Starting System
(303-06C Starting System - TD4 2.2L Diesel, Vehicles Built From:
01-03-2009, Description and Operation).
TERRAIN RESPONSE ROTARY CONTROL AND MODULE
Item
Part Number
Description
1
-
Hill Descent Control (HDC) switch
2
-
Special programs off
3
-
Grass/Gravel/Snow program
4
-
Rotary control
5
-
Mud/ruts program
6
-
Sand program
7
-
Dynamic Stability Control (DSC) switch
Each program is denoted by a symbol which represents the terrain encountered. The rotary control will only select the last
program in its direction of rotation. Further rotation of the control in either direction, once the last program has been
selected, will have no effect, for example; once 'Sand' has been selected, further rotation in a clockwise direction will
retain 'Sand'.
The control module and rotary control is connected via a harness connector which also contains the wiring for the HDC and
DSC switches and the illumination circuits. The control module and rotary control uses 4 of these wires for 12V battery
supply (ignition - only when the ignition is on) a ground and high speed CAN bus (positive and negative).
PRINCIPLES OF OPERATION
The following vehicle sub-system control modules are used for the Terrain Response system:
Engine management - Engine Control Module (ECM)
Transmission control - Transmission Control Module (TCM) (automatic transmission only)
Active on-demand coupling control module
Brake system - Anti-lock Brake System (ABS)/Dynamic Stability Control (DSC)/Electronic Traction Control (ETC)/ Hill
Descent Control (HDC) - ABS module